The Alameda land was first granted to Francisco Montes Vigil by the Spanish government in 1710. He turned around and sold it two years later in the valley's first recorded real estate flip. While Vigil's actual connection to the grant remained dubious, a woman who claimed to be his heir filed for partition of the grant in 1906. She did so under the helpful guidance and stewardship of the attorney McMillen, who Houghton calls "a particularly sly member of the Santa Fe Ring," and who was undoubtedly aware of legislation that would soon outlaw what he intended.

In a move practiced by unscrupulous attorneys, including McMillen himself in Las Trampas, he filed for partition of the Alameda grant, notifying residents and heirs in four newspaper legal ads published in the summer of 1906.

Partition filing at the time meant that any single community member could request the court to divide up the grant lands - including division of the common lands. Because actual division was deemed impossible to do fairly, communal land was sold. And in the case of Alameda, the majority of the grant lands were in communal ownership.

After resolution of the case and multiple appeals it was settled. Claimants got some land in the valley but over 75,000 acres of the communal holdings were sold. The amount was $15,000. After deductions of McMillen's fees and his payment, the amount divided beween the claimants was $8000. Houghton notes the receipts in a court file indicate most Alameda residents got about ten dollars each.

McMillen's "San Mateo Land Company" bought the grant. He had also purchased a great deal of deeded land from claimants during the case, a practice that would get him disbarred today. He ended up with 75,000 acres. The land was sold and leased for ranching until AMREP bought much of it in 1961.